A redistribution is a redrawing of electoral boundaries to ensure, as near as practicable:

each state and territory gains representation in the House of Representatives in proportion to their population, and

there are a similar number of electors in each electoral division for a given state or territory.

A redistribution is required when:

the number of members in the House of Representatives to which a state or territory is entitled has changed (population change)

the number of electors in more than one third of the electoral divisions in a state (or one of the electoral divisions in the ACT or the Northern Territory) deviates from the average divisional enrolment by over ten per cent for a period of more than two months, or

a period of seven years has elapsed since the last redistribution.

2014 entitlement determination

The last entitlement determination was made on 13 November 2014. A total of 150 seats will be contested at the next federal election for the House of Representatives in accordance with the following table.